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In addition to the IPTN, the two vendors conducted recent R&D that resulted in what they claim was the multi-vendor line side interworking between router and DWDM system suitable for long haul (LH) transmission.

The two vendors carried out this latest interoperability test on line side interworking of PTX 100G DWDM interfaces with hiT 7300 transponders and line system. They said the results highlight new use cases in seamless packet optical networks, which now include regeneration of router interfaces and handoff between routers from different vendors, which were not previously attuned on the line side.

This partnership is key for Juniper because it will help the company create an optical strategy that can satisfy service provider customers' growing desire to converge routing and optical functions.

An optical company collaborating with other vendors appears to be a new trend. Besides Juniper and Coriant, another notable partnership includes Ciena's (NYSE: CIEN) recent agreement with Ericsson, for example.

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